On Xbox
1)Inject your usb into your Xbox 360 and configure if needed
2)Load Call Of Duty: World At War and Select Memory Unit. Go To Solo > New Game and let the game load.
3)When it starts hit Start then Save and Quit
4)Tap the Xbox Guide button and select Xbox Dashboard then Eject your usb and inject it into your computer

On Computer
5)Open Up Usb Xtaf Xplorer, click File > Open Device and click through all the files to savegame.svg
6)Click savegame.svg and select extract and extract it to your desktop. Right click it on your desktop and click Rename and Name it whatever
7)Minimize Usb Xtaf Xplorer and open up ILuziionz Gamesave v1. and drag the savegame.svg file to your desktop.
8)Exit out of ILuziionz Gamesave v1 and open up Modio then go to Open A Save and select The one you renamed.
9)Place the box that just popped up somewhere that you'll remember like near the top of the screen. Go back to the main menu of Modio and click Open A Save again. Now select savegame.svg and put the box that just popped up somewhere you'll remember like at the bottom of the screen.
10)Now Copy The Profile ID of the unmodded save (The One I put near the top of the screen) and got to the modded save (the one i put near the bottom of the screen) then highlight the profile ID on the modded one hit back space and then hit Control+v for the ID you copied to go into the bar and do the same for the Device ID.
11)Close the box of the unmodded save (the one i put at the top of the screen) and click Rehash And Resign on the modded save box a few times.
12)Close Modio and the modded save box to the desktop and maximize Usb Xtaf Xplorer again
13)Click savegame.svg and click delete then click Inject and Inject savegame.svg from your desktop/
14)Exit Out of Usb Xtaf Xplorer then Eject Your usb and Inject it into your Xbox 360.

Back On Xbox
15)Go onto the My Xbox part of your Xbox dashboard then go to System Settings > Memory > Memory Unit > Games > Call Of Duty: World At War then select the game save and click move and move it to your Hard Drive.
16)Eject your usb and load up Call Of Duty: World At War then go to Solo > Resume Game.
17)When It Loads Press Start and then Hit the Xbox Guide Button and tap B (Back) then select quit
18) Go To Nazi Zombies > Private Match and invite a friend to the game. Start the game and there you go